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THE JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS
Rivista di Medicina, Traumatologia e Psicologia dello Sport
Indexed/Abstracted in: Chemical Abstracts, CINAHL, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 1,111
Original articles OTHER AREAS (Biochemistry, Immunology, Kinanthropometry, Neurology, Neurophysiology, Ophtalmology, Pharmacology, Phlebology, etc.)
Journal of Sports Medicine and Physical Fitness 2009 Giugno;49(2):194-200
Alterations in maximal inspiratory mouth pressure during a 400-m maximum effort front-crawl swimming trial
Thomaidis S. P. 1, Toubekis A. G. 1, Mpousmoukilia S. S. 2, Douda H. T. 1, Antoniou P. D. 1, Tokmakidis S. P. 1
1 Democritus University of Thrace Department of Physical Education and Sport Science
2 Kavala General Hospital, 2nd Pulmonary Clinic, Kavala, Greece
Aim. The aim of this study was to examine the changes of maximal inspiratory mouth pressure (PImax) during a 400-m front crawl swimming trial.
Methods. Eleven well-trained competitive swimmers (age: 17.6±0.8 years, mean±SE) performed a 400-m front-crawl trial with maximum effort (296.2±4.76 s). Then, on different days they swam a 300-m, 200-m and 100-m trials at a velocity corresponding to the 400-m trial. Measurements of PImax from residual volume at upright body position before and immediately after each trial were conducted using a portable mouth pressure meter.
Results. Maximal inspiratory mouth pressure did not change significantly after the 100-m and 200-m trial compared to baseline (131.8±9.7 and 123.7±10.3 vs. 140.9±8.9 cmH2O, P>0.05). However, PImax was significantly lower after the 300-m (118.8±7 cmH2O, P=0.02) and 400-m trials (118.1±9.9 cmH2O, P=0.01).
Conclusions. These results indicate that during a maximum effort of 400-m front crawl, the reduction of inspiratory muscle strength occurs after 300-m. This should be considered for competitive swimming training by implementing swim race distance-specific respiratory muscle training.